Pi-ower is great name but anglophone readers will tend to see greek p as a "m" so then pronouncing "?-ower" as "mower"... That's no good.Or at least seen it as a piece of metal junk as a "mower" could also being of some sort of self-humor...

So then a logo showing ?-ower embedded in a mower inscribed into a circle will be really great!

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While regarding "PowerLibre" logo, let's check also here in the following site-link for kanji and chinese ideograms connected together.

(You know it... Keeping an eye to chinese-like ideograms logo too, could be useful to pay respect to the major market available nowadays and being apprecciated as response)